Machine for making hollow forms from pliable compunds.



PATENTED NOV. 1o, 190s.

O. W. JEFFERSON. MACHINE POR MAKING HOLLOW FORMS PROM PLIABLE COMPOUNDS.

APPLIUATION FILED IBB. 3, 1902.

no NOBEL.

BY N 7W Q'LAWONN Ys moro-una.. wmmam Efo. 743,5 13.

llNrTED STATES atented November 10, 1903.

PATENT OFFICE.

CHARLES WILKIN JEFFERSON, OF SCHENECTADY, NEW YORK, ASSIGNOR TO MICAINSULATOR COMPANY, A CORPORATION OF NEW JERSEY.

p MACHINE FOR MAKING HOLLOWFORMS` FROM PLVIABLE COMPOUNDS.

SPECIFICATION forming part of Letters Patent No. 743,513, dated.November 10, 1903.

Application filed February 3, 1902. Serial No. 92,301. (No model.)

To all whom it may concern:

Be it known that I, CHARLES WILKIN JEF- FERSON, a citizen of GreatBritain, and a resident of Schenectady, county of Schenectady, and Stateof New York, have invented a new and useful Machine for Making Built-UpArticles from a Pliable Compound, of which the following is aspecification.

My invention is particularly adapted for the manufacture of hollow formsto be made by the compression of the pliable material into the desiredshape and also wherein the material is of such a nature as to be meltedor softened by the application of heat.

My invention has been found 'especially adapted for the manufacture ofhollow insulators composed of scales of mica bound together by shellacor a similar composition in which'the mica is laid on, and saidcomposition is fed to the inner wall of the formingdie in a ground' orpowdered state and then by heat and pressure is partially melted andpressed into a compact mass with the scales of mica.

In the accompanying drawing l have shown a partial vertical section of amachine illustrating one embodiment of my invention.

1 is the base of the machine.

2 and 3 are two upwardly-extending supports from the base 1 for most ofthe operating parts of the machine. These two supports 2 and 3 arepreferably parallel, andthe front support 2 may be cast integral withthe base 1, as shown in the drawing.

4 is the hollow die-cha mber or mold,in which the hollow forms are to bemade by pressure of the compound against the inner wall 5 of said die.The lowermost portion 6 ofthe wall 5 is preferably horizontal to allowfor the best distribution of the material or materials in making theform or insulator. The inner wall 5 is preferably of metal, so as to bea good heat-conductor, and the entire die 4 may be cast of one piece ofmetal. When the wall 5 converges toward the bottom of the die 4, it willhave to slant backward, as shown, in order that the lowermost portion 6of the wall 5 be horizontal. In such case the standards or supports 2and 3 will also slope backward, the shaft or spindle 7 of the die 4sloping downthe supports 2 and 3. The journal 8 of the spindle 7 in thesupport 3 is of less dia-meter than the adjoining part of the spindle,form ing an annular shoulder 9, which bears upon the inner side of thesupport 3. The part 10 of thespindle 4 inside the support 3 isscrewthreaded for the engagement of a surrounding adjusting-nut 11.

12 and 13 are two pulleys keyed upon the spindle or shaft 7 between thesupport 2 and the nut 11 and held in place by said nut.

The support 3 is provided with a horizontal extension 14, resting uponthe base 1, which is adjustably secured to said base by a slotand-screwconnection 15, so that the support 3 may be adjusted on the spindle 7and also so that said spindle and the die 4 may be readily removed andreplaced by another.

16 is a pulley journaled to a bracket 17 on the support 2 above thepulleys 12 and 13, and 18 is a belt passing over pulleys 16 and 12 andcommunicating-revolution to said pulleys from a driving-pulley (notshown) below the machine.

19 is a bracket extending from the top of the support 2 and forward fromthe same to a point above the opening in the die 4. Suspended from theforward end of said bracket 19 is a receptacle 20, having afunnel-shaped bottom 21, to the contracted outlet of which is connectedan outlet tube or chute 22.

f23 is a sieve-diaphragm extending across thereceptacle 20, where itbegins to contract into a funnel.

24' is a spindle extending vertically from the center of the sieve 23through the receptacle 20 and provided with `laterally-extending arms25, which rest upon the sieve 23.

26 is a shaft journaled in bearings in the bracket 19, and the forwardend of said shaft 26 is connected by a iiexible shaft 27 with the upperend of the. spindle 24. A pulley 28 is secured to the rear end of theshaft 26, and this pulley 28 -is connected by a belt 29 with the pulley13. The rotation of the pulley 28 by the pulley 13 and belt 29 willcause the shafts 26 and 27 and spindle 24 to revolve and also rotate thearms 25 over the sieve. The revolutionof the above-named devices willward and backward and being journaled in` ICO be transmitted from therevolution of the spindle 10, which is caused by the belt 13 and pulleys16 and 12, as above stated.

30 is a horizontal adjustable support passing loosely through a sleeve31 of the base l and adjusted at any point desired bya binding-screw 32,passing through the Wall of said sleeve. The front end of the support 30is provided with a Vertical sleeve 33, through which passes loosely astandard 34. The lower part of this standard 34 is screw-threaded, as at35, for the engagement of a nut 36,

and a coil-spring 37 encircles the standard 34 between the lower end ofthe sleeve 33 and the nut 36. A pin 38, extendinglaterallyoutward fromthe support 34 and through a ver-` tical slot 39 in the sleeve 33,permits vertical play of said support, but prevents its turning in thesleeve. Removably secured to the upper end of the support 33 andradially adjustable upon the same, so that it may be adjusted to anyangle with said support, is a spindle 40, and journaled upon thisspindle is a friction-roller 41, entering in the die 4 and bearing downon the lower part 6 of the wall 5. This roller 4l, by means of the nut36 and spring 37, as above described, serves to increase or diminish thepressure of said roller on the wall 5 of the die. The spring causes ayielding pressure of the roller sufficient to allow a material to enterbetween it and the inner wall of the die. An electric resistancecoil 42,fitted within the roller 41 and surrounding the spindle 40 and which maybe connected with any electric circuit, serves to heat'the roller 41 andto partially melt and soften any material which may be so affected byheat that is introduced between said roller and the inner wall 5 of thedie 4. If the wall 5 of the die 4 converges at its inner end so that therecess of the die is conical in shape, as shown in the drawing, it ispreferable to use a conical roller 41, as shown, as the outer surface ofthe latter will better conform to the wall 5 of the former.

If it be desired to form a compact and pressed conically-shaped ring forinsulation-- of mica scales and powdered shellac, for example-a littleadhesive material is first spread over the wall 5 of the die 4, and itis slowly revolved by the means above described while the operatordeposits over said wall 5 the mica'scales. The mica passes between theroller 4l and the wall 5 and is pressed. Powdered shellac from thereceptacle 2O then drops through the chute 22 onto the layer of mica andit also passes between the roller 41 and the wall 5 of the die and bymeans of the heat from said roller is partly melted and softened, andthus pressed into a compact mass with the mica. Alternate layers of micaand powdered shellac-may thus be deposited upon the wall 5 and rolledand compressed together at successive revolutions of said die until thedesired thickness of the ring is attained. The introduction of thematerial between the roller 41 and the wall 5 of the die 4 graduallyraises the roller 41 from the wall 5 against the action of the spring37. I have shown in the drawing the roller so raised and a ring ofinsulation 43 made by the abovedescribed mechanism.

From the above it will bo seen that my invention provides means not onlyfor making hollow forms from mica scales and shellac, but it alsoprovides means for building up articles from other structural substancesand fusible cement.

My invention in its broader aspects is not limited to the preciseconstruction shown and described, nor to the precise construction bywhich it may be carried into effect, as many changes other than thosesuggested may be made therein without departing from the main principlesof my invention.

What I claim as new, and desire to secure by Letters Patent, is-

1. A new and useful machine for making hollow forms from a pliablecompound, consisting of a hollow die or chamber, a pressure devicewithin said die, means for bearing its outer surface toward the innerwall of the die, and means for causing movement relative to each otherof said device and die, whereby the compound may be pressed and moldedbetween said die and device, with the pressed surfaces of the compoundconstituting the inner and outer walls of the form.

2. A new and useful machine for making hollow forms from a pliablecompound, consisting of a hollow die or chamber, a pressure devicewithin said die, means for yieldingly bearing its outer surface towardthe inner wall of the die, and means for causing movement relative toeach other of said device and die,whereby the compound may be pressedand molded between said die and device, with the pressed surfaces of thecompound constituting the inner and outer walls of the form.

3. A new and useful machine for making hollow forms from a pliablecompound, consisting of a hollow die or chamber, having an annular innerwall, a pressure device within said die, means for bearing its outersurface toward the inner wall of the die, and means for causing movementrelative to each other of said device and die, whereby the compound maybe pressed and molded between said die and device, with the pressedsurfaces of the compound constituting the `inner and outer walls of theform.

4. A new and useful machine for making hollow forms from a pliablecompound, consisting of a hollow die or chamber, a pressure devicewithin said die, having a curved outer surface and means for bearing ittoward the inner wall of the die, and means for causing movementrelative to each other of said device and die, whereby the compound maybe pressed and molded between said die and device, with the pressedsurfaces of the compound constituting the inner and outer walls of theform.

5. A new and useful machine for making IOO hollow forms of a pliablecompound, consisting of a hollow die or chamber, having an annular innerwall, a pressure device within said die, having a curved outer surfaceand means for bearing it toward the inner wall of the die, and means forcausing movement relative to each other of said device and die, wherebythe compound may be pressed and molded between said die and device, withthe pressed surfaces of the compound constituting the inner and outerwalls of the form.

6. A new and useful machine for making hollow forms from a pliablecompound, consisting of a hollow die or chamber having an annular innerwall, a pressure device having aV curved outer surface within said die,and means for bearing said outer surface toward the inner wall of thedie, and means for causing the revolution of said die or device, where#by the compound may be pressed and molded between said die and device,with the pressed surfaces of the compoundconstituting the inner andouter walls of the form.

7. A new and useful machine for making hollow forms from a pliablecompound, consisting of a hollow die or chamber having an annular innerwall, a pressure-roller within said die, means for bearing it toward theinner wall of the die, and means for causing the revolution of said dieor roller, whereby the compound may be pressed and molded between saiddie and roller, with the pressed surfaces of the compound constitutingthe inner and outer walls of the form.

8. A new and useful machine for making hollow forms from a pliablecompound, consisting of a hollow die or chamber having an annular innerwall, a pressure-roller within said die, means for bearing it toward theinner wall of the die, and means for causing the revolution of said die,whereby the compound may be pressed and molded between` said die androller, with the pressed surfaces of the compound constituting the innerand outer walls of the form.

. 9. A new and useful machine for making hollow forms from a pliablecompound, consisting of a hollow die or chamber having an annular innerwall, a pressure ldevice having a curved outer surface within said die,means for bearing said outer surface toward the inner wall of the die,means for causingthe revolution of said die or device, and means forheating said device, whereby the com` pound may be melted and pressedbetween said die and device, with the pressed surfaces` by the compoundmay be melted and pressed between said die and device, with the pressedsurfaces of the compound constituting the inner and outer walls of theform.

1l. A new and useful machine for making hollow forms from a pliablecompound, consisting of a hollow die or chamber, a pressure devicewthin'said die, means for bearing its outer surface toward the innerwall of the die, and means for causing movement relative to each otherof said device and die, and means for feeding the compound to the innerwalls of said die, whereby the compound may be fed, pressed and moldedbetween said die and device, with the pressed surfaces of the compoundconstituting the inner and outer walls of the form.

12. A new and useful machine for making hollow forms from a pliablecompound, consisting of a hollow die or chamber, a pressure devicewithin said die, means for bearing its outer surface toward the innerwall of the die, and means for causing movement relative to each otherof said device and die, a receptacle, a delivery-chute leading from thesame and to the die, and a sieve near the bottom of said receptacle andabove the chute, whereby a compound may be sifted, and then fed andpressed between said die and device, with the pressed surfaces of thecompound constituting the inner and outer walls of the forln.

13. A new and useful machine for making hollow forms from a pliablecompound, consisting of a hollow die or chamber, a pressure devicewithin said die, means for bearing its outer surface toward the innerwall of the die, and means for causing movement relative to each otherof said device and die, a receptacle, a delivery-chute leading from thesame and to the die, and a sieve near the bottomof said receptacle andabove the chute,

and agitating-arms above said sieve,whereby.

the compound may be sifted, and then fed and pressed between said dieand device,with the pressed surfaces of the compound constituting theinner and outer walls of the form.

14. A new and useful machine for making built-up articles from a pliablecompound IOS IIO

containing a fusible cement, consisting of a rotatable mold, means forapplying the said compound to said mold, and means for' ap plying heatand pressure to said compound and mold, whereby the compound may bepressed and molded.

15. A new and useful machine for making built-up articles from a pliablecompound containing a fusible cement, consisting of a hollow rotatablemold, means for applying the said compound to the interior of said moldand means for applying heat and pressure to said compound andmold,whereby the compound may be pressed and molded into a hollow form.Y

16. A machine for making built-up articles of a structural substance andfusible cement, consisting of a rotatable hollow mold adapted to receivelayers of said substance, means for applying the fusible cement when ina divided state to each layer of said substance, and means Within themold for applying heat and pressure to each layer.

17. A machine for making built-up articles of a structural substance anda fusible cement, comprising a rotatable support, a mold removablymounted on said support and adapted to receive layers of said substance,means Within the mold for applying the cementing material to each layer,and means for applyingl heat and pressure to each layer.

18. A machine for making built-up articles of mica and fusible cementcomprising a rotatable support, a mold removably mounted l5 on saidsupport and adapted to receive the mica layers, means for supplyingdivided fusible cementing material to each layer, and means for applyingheat and pressure to each layer while on said mold.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CHARLES WILKIN JEFFERSON.

Witnesses:

ALLAN H. JACKSON, HoMER STRONG.

